稻谷由稻壳及糙米两部分组成，糙米脂肪酸含量是评价稻谷是否宜存的重要指标。本试验选取了26份样品，分别测定稻谷、糙米及稻壳中的脂肪酸含量，并探寻三者脂肪酸含量之间的相关性。结果表明，稻谷脂肪酸含量与糙米脂肪酸含量、稻壳脂肪酸含量均呈正相关关系，稻谷脂肪酸含量与糙米脂肪酸含量的相关性较大，相关系数达0.9207；糙米脂肪酸含量与稻壳脂肪酸含量呈负相关关系，相关系数为-0.1531。测定稻谷的脂肪酸含量，代替糙米脂肪酸含量来判定稻谷是否宜存在统计学上是可行的。

Rice consists of rice husk and brown rice, the content of fatty acid in brown rice is an important index to evaluate whether rice grain is suitable for storage. In order to find out the relations and correlation of the fatty acid content of rice，brown rice and rice husk, 26 samples were selected in this experiment. The results showed that the fatty acid content of rice was positively correlation with the fatty acid content of brown rice and rice husk, the correlation coefficient of the fatty acid content of rice and brown rice reached 0.9207; the fatty acid content of brown rice was negatively correlated with the rice husk. It is feasible to determine whether the rice grain is suitable for storage by measuring the fatty acid content of rice in place of the fatty acid content of brown rice.